Examine source code of Crazy Colored Lines

{
  "theme": {
    "images": {
      "theme_frame": "firefoxheader.png"
    },
    "colors": {
      "frame": "#d1c32e",
      "tab_background_text": "#0d1bde"
    }
  },
  "version": "2.0",
  "name": "Crazy Colored Lines",
  "manifest_version": 2,
  "description": "This is just a cool simple header that I made."
}